The Tamron 18-270mm f3.5-6.3 Di II PZD lens is a 15x zoom lens that
features Tamron's unique Piezo Drive ultrasonic motor for silent,
precise and extraordinarily fast autofocus.
The 15x zoom offers focal lengths from 18mm at the wide-angle end up to
a telephoto 270mm (29-432mm in 35mm equivalent) making it an ideal, all
Despite its impressive performance, the Tamron 18-270mm f3.5-6.3 Di II
PZD lens is both lightweight and compact, making it a great choice for
PZD (PIEZO Drive)
Ultrasonic motors are divided into two categories depending on how the
energy that moves the drive is generated: travelling wave motors and
standing wave motors. The 18-270mm F/3.5-6.3 Di II PZD employs a newer
technology, the PZD (PIEZO Drive), which functions according to the
standing wave principle.
A standing wave ultrasonic motor utilizes high-frequency voltage to
extend and turn the piezoelectric (piezoceramic) element, thus moving
the entire element in a standing wave movement. The metal tip is the
contact point of the element to the rotor, and moves in an elliptic
motion from the swivelling motion of the moving element.
The friction from this motion subsequently turns the rotor. Standing
wave ultrasonic motors have the distinct advantage of being faster,
quieter and more precise and compact than their travelling wave
ALL TAMRON LENSES BOUGHT FROM CAMERA CENTRE COME WITH A 5 YEAR UK